CS 29.1309 Equipment, systems, and installations
ED Decision 2023/001/R
(a) Equipment and systems required to comply with type-certification requirements, airspace requirements or operating rules, or whose improper functioning would lead to a hazard, must be designed and installed so that they perform their intended function throughout the operating and environmental conditions for which the rotorcraft is certified.
(b) The equipment and systems covered by sub-paragraph (a), considered separately and in relation to other systems, must be designed and installed such that:
(1) each catastrophic failure condition is extremely improbable and does not result from a single failure, and for Category A rotorcraft, the occurrence of any failure condition which would prevent the continued safe flight and landing of the rotorcraft is considered as catastrophic;
(2) each hazardous failure condition is extremely remote; and
(3) each major failure condition is remote.
(c) The operation of equipment and systems not covered by sub-paragraph (a) must not cause a hazard to the rotorcraft or its occupants throughout the operating and environmental conditions for which the rotorcraft is certified.
(d) Information concerning an unsafe system operating condition must be provided in a timely manner to the flight crew member responsible for taking corrective action. The information must be clear enough to avoid likely flight crew member errors.
[Amdt 29/4]
[Amdt No: 29/11]
Large rotorcraft equipment and systems must function reliably under all certified conditions. Critical failures must be improbable, especially for Category A rotorcraft. Non-critical system failures shouldn't endanger the aircraft. Flight crews must receive timely, clear warnings about unsafe system conditions to ensure safe operation.
* Summary by Aviation.Bot - Always consult the original document for the most accurate information.
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